Fabrication of MoS2 and p-type Silicon Heterojunction for Photocatalytic Hydrogen Evolution Reaction in Acidic Medium

摘要

Recently two directional layered materials have been explored as novelphotocatalyst for hydrogen generation and several other applications. Among these, n-typemolybdenum disulphide (MoS_2) is being widely studied for its excellent tunable optoelectronicand photochemical properties. It has a direct band gap of 1.8 eV which makes it a promisingcandidate in future of optoelectronic devices. Again, it can be combined with conventionalsemiconductors like silicon to fabricate a two dimensional/ three-dimensional (2D/3D)heterojunction for optoelectronics and photocatalytic application. In this study we explored thefabrication of a 2D/3D heterojunction and the photocatalytic hydrogen evolution reaction(HER).